JP2014508854A - 延性に優れた成形部材用鋼板、成形部材及びその製造方法 - Google Patents
延性に優れた成形部材用鋼板、成形部材及びその製造方法 Download PDFInfo
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- 239000010959 steel Substances 0.000 title claims abstract description 83
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 35
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 7
- 229910001566 austenite Inorganic materials 0.000 claims description 57
- 229910000734 martensite Inorganic materials 0.000 claims description 35
- 230000000717 retained effect Effects 0.000 claims description 35
- 238000001816 cooling Methods 0.000 claims description 21
- 238000007747 plating Methods 0.000 claims description 15
- 229910000859 α-Fe Inorganic materials 0.000 claims description 14
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- 239000010960 cold rolled steel Substances 0.000 claims description 10
- 229910052750 molybdenum Inorganic materials 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 10
- 229910052758 niobium Inorganic materials 0.000 claims description 10
- 229910052721 tungsten Inorganic materials 0.000 claims description 10
- 229910052720 vanadium Inorganic materials 0.000 claims description 10
- 229910052726 zirconium Inorganic materials 0.000 claims description 10
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 5
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- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000003303 reheating Methods 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 238000009713 electroplating Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000005275 alloying Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 15
- 239000012779 reinforcing material Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
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- 238000009792 diffusion process Methods 0.000 description 2
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- 238000005246 galvanizing Methods 0.000 description 2
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- 229920006395 saturated elastomer Polymers 0.000 description 2
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- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
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- 230000001934 delay Effects 0.000 description 1
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- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
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- 230000000704 physical effect Effects 0.000 description 1
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Abstract
Description
(a):Cr:0.01〜2.0%、Mo:0.01〜2.0%、及びW:0.01〜2.0%からなる群より選択された1種以上
(b):Ti:0.001〜0.4%、Nb:0.001〜0.4%、Zr:0.001〜0.4%、及びV:0.001〜0.4%からなる群より選択された1種以上
(c):Cu:0.005〜2.0%及びNi:0.005〜2.0%のうち1種または2種
(d):B:0.0001〜0.01%
(e):Sb:0.001〜0.1%
(a):Cr:0.01〜2.0%、Mo:0.01〜2.0%、及びW:0.01〜2.0%からなる群より選択された1種以上
(b):Ti:0.001〜0.4%、Nb:0.001〜0.4%、Zr:0.001〜0.4%、及びV:0.001〜0.4%からなる群より選択された1種以上
(c):Cu:0.005〜2.0%及びNi:0.005〜2.0%のうち1種または2種
(d):B:0.0001〜0.01%
(e):Sb:0.001〜0.1%
(a):Cr:0.01〜2.0%、Mo:0.01〜2.0%、及びW:0.01〜2.0%からなる群より選択された1種以上
(b):Ti:0.001〜0.4%、Nb:0.001〜0.4%、Zr:0.001〜0.4%、及びV:0.001〜0.4%からなる群より選択された1種以上
(c):Cu:0.005〜2.0%及びNi:0.005〜2.0%のうち1種または2種
(d):B:0.0001〜0.01%
(e):Sb:0.001〜0.1%
Claims (16)
- 重量%で、C:0.1〜1.0%、Si+Al:0.4〜3.0%、Mn:0.1〜5.0%、P:0.0001〜0.1%、S:0.0001〜0.03%、N:0.03%以下(0は除く)、残部Fe及びその他の不可避な不純物からなる、延性に優れた成形部材用鋼板。
- 前記鋼板は、下記(a)、(b)、(c)、(d)、及び(e)からなる群より選択された1種以上をさらに含む、請求項1に記載の延性に優れた成形部材用鋼板。
(a):Cr:0.01〜2.0%、Mo:0.01〜2.0%、及びW:0.01〜2.0%からなる群より選択された1種以上
(b):Ti:0.001〜0.4%、Nb:0.001〜0.4%、Zr:0.001〜0.4%、及びV:0.001〜0.4%からなる群より選択された1種以上
(c):Cu:0.005〜2.0%及びNi:0.005〜2.0%のうち1種または2種
(d):B:0.0001〜0.01%
(e):Sb:0.001〜0.1% - 前記鋼板は、熱延鋼板、冷延鋼板、またはめっき鋼板のうち1つである、請求項1に記載の延性に優れた成形部材用鋼板。
- 前記めっき鋼板は、熱延鋼板または冷延鋼板に金属コーティング層または樹脂コーティング層が形成される、請求項3に記載の延性に優れた成形部材用鋼板。
- 前記金属コーティング層は、アルミニウムめっき、亜鉛めっき、合金化亜鉛めっき、及び亜鉛電気めっきのうち1つを用いて形成される、請求項4に記載の延性に優れた成形部材用鋼板。
- 前記樹脂コーティング層は、ゾルゲルまたはアルミニウム粉末のうち1種または2種を用いて形成される、請求項4に記載の延性に優れた成形部材用鋼板。
- 前記鋼板は、熱処理後の微細組織が、面積分率で、5〜40%の残留オーステナイト、60〜95%のマルテンサイト、及び10%以下(0%を含む)のフェライトを含む、請求項1から6のいずれか一項に記載の延性に優れた成形部材用鋼板。
- 重量%で、C:0.1〜1.0%、Si+Al:0.4〜3.0%、Mn:0.1〜5.0%、P:0.0001〜0.1%、S:0.0001〜0.03%、N:0.03%以下(0は除く)、残部Fe及びその他の不可避な不純物からなり、
微細組織は、面積分率で、5〜40%の残留オーステナイト、60〜95%のマルテンサイト、及び10%以下(0%を含む)のフェライトを含む、延性に優れた成形部材。 - 前記成形部材は、下記(a)、(b)、(c)、(d)、及び(e)からなる群より選択された1種以上をさらに含む、請求項8に記載の延性に優れた成形部材。
(a):Cr:0.01〜2.0%、Mo:0.01〜2.0%、及びW:0.01〜2.0%からなる群より選択された1種以上
(b):Ti:0.001〜0.4%、Nb:0.001〜0.4%、Zr:0.001〜0.4%、及びV:0.001〜0.4%からなる群より選択された1種以上
(c):Cu:0.005〜2.0%及びNi:0.005〜2.0%のうち1種または2種
(d):B:0.0001〜0.01%
(e):Sb:0.001〜0.1% - 前記成形部材は、引張強度が1000Mpa以上、延伸率が10%以上である、請求項8に記載の延性に優れた成形部材。
- 重量%で、C:0.1〜1.0%、Si+Al:0.4〜3.0%、Mn:0.1〜5.0%、P:0.0001〜0.1%、S:0.0001〜0.03%、N:0.03%以下(0は除く)、残部Fe及びその他の不可避な不純物からなる鋼板をプレス成形するプレス成形段階と、
前記プレス成形された鋼板をMs〜Mfの温度領域まで急冷する急冷段階と、
前記急冷された鋼板をAc1以下の温度領域まで加熱してから維持する加熱段階
とを含む、延性に優れた成形部材の製造方法。 - 前記成形部材は、下記(a)、(b)、(c)、(d)、及び(e)からなる群より選択された1種以上をさらに含む、請求項11に記載の延性に優れた成形部材の製造方法。
(a):Cr:0.01〜2.0%、Mo:0.01〜2.0%及びW:0.01〜2.0%からなる群より選択された1種以上
(b):Ti:0.001〜0.4%、Nb:0.001〜0.4%、Zr:0.001〜0.4%及びV:0.001〜0.4%からなる群より選択された1種以上
(c):Cu:0.005〜2.0%及びNi:0.005〜2.0%のうち1種または2種
(d):B:0.0001〜0.01%
(e):Sb:0.001〜0.1% - 前記プレス成形段階の前に、Ac3温度以上のオーステナイト領域に昇温する昇温段階をさらに含む、請求項11に記載の延性に優れた成形部材の製造方法。
- 前記プレス成形段階の後に、Ac3温度以上のオーステナイト領域に昇温する昇温段階をさらに含む、請求項11に記載の延性に優れた成形部材の製造方法。
- 前記急冷は、10〜500℃/sの速度で行われる、請求項11に記載の延性に優れた成形部材の製造方法。
- 前記再加熱後の維持時間は、1〜10000秒である、請求項11に記載の延性に優れた成形部材の製造方法。
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Also Published As
Publication number | Publication date |
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EP2660345B1 (en) | 2020-04-15 |
EP2660345A2 (en) | 2013-11-06 |
KR20120073407A (ko) | 2012-07-05 |
JP5879364B2 (ja) | 2016-03-08 |
CN103392022A (zh) | 2013-11-13 |
KR101253885B1 (ko) | 2013-04-16 |
ES2804260T3 (es) | 2021-02-05 |
WO2012091328A3 (ko) | 2012-09-07 |
WO2012091328A2 (ko) | 2012-07-05 |
EP2660345A4 (en) | 2017-05-17 |
CN103392022B (zh) | 2016-08-17 |
US20130295402A1 (en) | 2013-11-07 |
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